From a29eb3e38414cd252850c9c4fb356f8b2bef6fb4 Mon Sep 17 00:00:00 2001
From: Christoph Helma <helma@in-silico.ch>
Date: Fri, 12 Feb 2021 19:54:07 +0100
Subject: model.rb refactored, mp2d models updated

---
 lib/feature_selection.rb | 45 ---------------------------------------------
 1 file changed, 45 deletions(-)
 delete mode 100644 lib/feature_selection.rb

(limited to 'lib/feature_selection.rb')

diff --git a/lib/feature_selection.rb b/lib/feature_selection.rb
deleted file mode 100644
index c596b1f..0000000
--- a/lib/feature_selection.rb
+++ /dev/null
@@ -1,45 +0,0 @@
-module OpenTox
-  module Algorithm
-    
-    # Feature selection algorithms
-    class FeatureSelection
-
-      # Select features correlated to the models prediction feature
-      # @param [OpenTox::Model::Lazar]
-      def self.correlation_filter model
-        relevant_features = {}
-        R.assign "dependent", model.dependent_variables.collect{|v| to_r(v)}
-        model.descriptor_weights = []
-        selected_variables = [] 
-        selected_descriptor_ids = []
-        model.independent_variables.each_with_index do |v,i|
-          v.collect!{|n| to_r(n)}
-          R.assign "independent", v
-          begin
-            R.eval "cor <- cor.test(dependent,independent,method = 'pearson',use='pairwise')"
-            pvalue = R.eval("cor$p.value").to_ruby
-            if pvalue <= 0.05
-              model.descriptor_weights << R.eval("cor$estimate").to_ruby**2
-              selected_variables << v
-              selected_descriptor_ids << model.descriptor_ids[i]
-            end
-          rescue
-            warn "Correlation of '#{model.prediction_feature.name}' (#{model.dependent_variables}) with (#{v}) failed."
-          end
-        end
-
-        model.independent_variables = selected_variables
-        model.descriptor_ids = selected_descriptor_ids
-        model
-      end
-
-      def self.to_r v
-        return 0 if v == false
-        return 1 if v == true
-        v
-      end
-
-    end
-
-  end
-end
-- 
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